33404242423 has 2 divisors, whose sum is σ = 33404242424. Its totient is φ = 33404242422.

The previous prime is 33404242393. The next prime is 33404242433. The reversal of 33404242423 is 32424240433.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33404242423 is a prime.

It is a super-2 number, since 2×33404242423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33404242433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16702121211 + 16702121212.

It is an arithmetic number, because the mean of its divisors is an integer number (16702121212).

Almost surely, 2^33404242423 is an apocalyptic number.

33404242423 is a deficient number, since it is larger than the sum of its proper divisors (1).

33404242423 is an equidigital number, since it uses as much as digits as its factorization.

33404242423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 33404242423 its reverse (32424240433), we get a palindrome (65828482856).

The spelling of 33404242423 in words is "thirty-three billion, four hundred four million, two hundred forty-two thousand, four hundred twenty-three".